chenBright commented on code in PR #2942:
URL: https://github.com/apache/brpc/pull/2942#discussion_r2035252881


##########
src/butil/iobuf.cpp:
##########
@@ -1371,6 +1371,50 @@ IOBuf::Area IOBuf::reserve(size_t count) {
     return result;
 }
 
+IOBuf::Area IOBuf::reserve_aligned(size_t n, size_t alignment) {
+    bool is_power_two = alignment > 0 && (alignment & (alignment - 1));
+    if (is_power_two != 0) {
+        LOG(ERROR) << "Invalid alignment, must power of two";
+        return INVALID_AREA;
+    }
+    size_t count = (n + alignment - 1) & ~(alignment - 1);
+    IOBuf::Area result = INVALID_AREA;
+    size_t total_nc = 0;
+    while (total_nc < count) {  // excluded count == 0
+        IOBuf::Block* b = iobuf::share_tls_block();
+        if (BAIDU_UNLIKELY(!b)) {
+            return INVALID_AREA;
+        }
+        const size_t remainder =

Review Comment:
   只移除full block就行了吧



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